package com.leilei.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.leilei.reggie.common.R;
import com.leilei.reggie.dto.DishDto;
import com.leilei.reggie.entity.Category;
import com.leilei.reggie.entity.Dish;
import com.leilei.reggie.entity.DishFlavor;
import com.leilei.reggie.service.CategoryService;
import com.leilei.reggie.service.DishFlavorService;
import com.leilei.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

/**
 * 菜品管理
 */
@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    @Autowired
    private DishService dishService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private CategoryService categoryService;



    /**
     * 新增菜品
     * @param dishDto
     * @return
     */
    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto){

        log.info(dishDto.toString());

        dishService.saveWithFlavor(dishDto);

        return R.success("新增菜品成功");

    }


    /**
     * 菜品分页显示
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){

        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page,pageSize);
        Page<DishDto> dishDtoPage = new Page<>();


        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();

        //添加过滤条件
        queryWrapper.like(name != null,Dish::getName,name);

        //添加排序条件
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item)->{

            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();    //分类id

            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null){

                String categoryName = category.getName();

                dishDto.setCategoryName(categoryName);

            }

            return dishDto;

        }).collect(Collectors.toList());

        dishDtoPage.setRecords(list);

        return R.success(dishDtoPage);

    }



    /**
     * 根据id查询菜品信息和对应的口味信息
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id){

        DishDto dishDto = dishService.getByIdWithFlavor(id);

        return R.success(dishDto);
    }



    /**
     * 修改菜品
     * @param dishDto
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto){

        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        return R.success("修改菜品成功");

    }



    /**
     * 根据条件查询菜品数据
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish){

        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper();
        queryWrapper.eq(dish.getCategoryId() != null,Dish::getCategoryId,dish.getCategoryId());
        //添加条件，查询状态为1(起售状态)的菜品
        queryWrapper.eq(Dish::getStatus,1);

        //添加排序条件
        queryWrapper.orderByAsc(Dish::getStatus).orderByDesc(Dish::getUpdateTime);

        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item)->{
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId();

            Category category = categoryService.getById(categoryId);

            if (category!=null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品id
            Long dishId = item.getId();

            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();

            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);

            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);

            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());

        return R.success(dishDtoList);
    }


    /**
     * 根据id删除菜品
     * @param ids
     * @return
     */
    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids){

            dishService.removeByIds(ids);

            return R.success("删除菜品成功");


    }


    /**
     * 更新菜品为停售
     * @param ids
     * @return
     */
    @PostMapping("/status/0")
    public R<String> updateStatusStop(@RequestParam List<Long> ids){

        for (Long id : ids){

            Dish dish = dishService.getById(id);

            if (dish.getStatus() == 1){

                dish.setStatus(0);

                LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper();

                queryWrapper.eq(Dish::getId,id);

                dishService.update(dish,queryWrapper);

            }else {
                return R.error("当前已在停售状态，不可修改");
            }

        }

        return R.success("状态更新成功");

    }


    /**
     * 更新菜品为启售
     * @param ids
     * @return
     */
    @PostMapping("/status/1")
    public R<String> updateStatusStart(@RequestParam List<Long> ids){

        for (Long id : ids){

            Dish dish = dishService.getById(id);

            if (dish.getStatus() == 0){

                dish.setStatus(1);

                LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper();

                queryWrapper.eq(Dish::getId,id);

                dishService.update(dish,queryWrapper);

            }else {
                return R.error("当前已在启售状态，不可修改");
            }

        }

        return R.success("状态更新成功");

    }
}
